overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir ====================================================== WARNING: possible circular locking dependency detected 4.19.162-syzkaller #0 Not tainted ------------------------------------------------------ overlayfs: filesystem on './file1' not supported as upperdir syz-executor.5/29615 is trying to acquire lock: 00000000c4889787 (&ovl_i_mutex_dir_key[depth]){++++}, at: inode_lock_shared include/linux/fs.h:758 [inline] 00000000c4889787 (&ovl_i_mutex_dir_key[depth]){++++}, at: do_last fs/namei.c:3326 [inline] 00000000c4889787 (&ovl_i_mutex_dir_key[depth]){++++}, at: path_openat+0x1215/0x2870 fs/namei.c:3537 but task is already holding lock: 00000000e71b375d (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x4e/0x100 fs/exec.c:1419 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&sig->cred_guard_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf5/0x1200 kernel/locking/mutex.c:1072 mutex_lock_killable_nested+0x16/0x20 kernel/locking/mutex.c:1102 do_io_accounting+0x1ea/0x9c0 fs/proc/base.c:2737 proc_tid_io_accounting+0x11/0x20 fs/proc/base.c:2780 proc_single_show+0xf3/0x170 fs/proc/base.c:755 seq_read+0x3e2/0xfd0 fs/seq_file.c:229 do_loop_readv_writev fs/read_write.c:701 [inline] do_iter_read+0x362/0x560 fs/read_write.c:925 overlayfs: filesystem on './file1' not supported as upperdir vfs_readv+0xc9/0x130 fs/read_write.c:987 do_preadv+0x158/0x230 fs/read_write.c:1071 __do_sys_preadv fs/read_write.c:1121 [inline] __se_sys_preadv fs/read_write.c:1116 [inline] __x64_sys_preadv+0x95/0xf0 fs/read_write.c:1116 overlayfs: failed to resolve './file1': -2 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (&p->lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf5/0x1200 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 seq_read+0x66/0xfd0 fs/seq_file.c:161 proc_reg_read+0x1a5/0x240 fs/proc/inode.c:231 do_loop_readv_writev fs/read_write.c:701 [inline] do_iter_read+0x362/0x560 fs/read_write.c:925 overlayfs: './bus' not a directory vfs_readv+0xc9/0x130 fs/read_write.c:987 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x411/0x910 fs/splice.c:417 do_splice_to+0xe3/0x120 fs/splice.c:881 splice_direct_to_actor+0x296/0x870 fs/splice.c:959 overlayfs: filesystem on './file1' not supported as upperdir do_splice_direct+0x14c/0x270 fs/splice.c:1068 do_sendfile+0x481/0xcf0 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x100/0x120 fs/read_write.c:1494 __x64_sys_sendfile64+0x92/0xf0 fs/read_write.c:1494 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (sb_writers#3){.+.+}: percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x55/0x220 fs/super.c:1366 sb_start_write include/linux/fs.h:1579 [inline] mnt_want_write+0x3c/0xa0 fs/namespace.c:360 overlayfs: filesystem on './file1' not supported as upperdir ovl_want_write+0x71/0x90 fs/overlayfs/util.c:24 ovl_create_object+0x8d/0x290 fs/overlayfs/dir.c:600 ovl_create+0x1e/0x20 fs/overlayfs/dir.c:631 lookup_open+0x780/0x1d00 fs/namei.c:3235 do_last fs/namei.c:3327 [inline] path_openat+0xeff/0x2870 fs/namei.c:3537 do_filp_open+0x177/0x250 fs/namei.c:3567 do_sys_open+0x1dd/0x350 fs/open.c:1085 __do_sys_open fs/open.c:1103 [inline] __se_sys_open fs/open.c:1098 [inline] __x64_sys_open+0x79/0xb0 fs/open.c:1098 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&ovl_i_mutex_dir_key[depth]){++++}: lock_acquire+0x180/0x3a0 kernel/locking/lockdep.c:3907 down_read+0x3b/0xb0 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:758 [inline] do_last fs/namei.c:3326 [inline] path_openat+0x1215/0x2870 fs/namei.c:3537 do_filp_open+0x177/0x250 fs/namei.c:3567 do_open_execat+0xe1/0x4a0 fs/exec.c:853 __do_execve_file.isra.12+0x14a0/0x1d40 fs/exec.c:1770 do_execveat_common fs/exec.c:1879 [inline] do_execveat+0x18/0x20 fs/exec.c:1907 __do_sys_execveat fs/exec.c:1988 [inline] __se_sys_execveat fs/exec.c:1980 [inline] __x64_sys_execveat+0xe2/0x120 fs/exec.c:1980 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &ovl_i_mutex_dir_key[depth] --> &p->lock --> &sig->cred_guard_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sig->cred_guard_mutex); lock(&p->lock); lock(&sig->cred_guard_mutex); lock(&ovl_i_mutex_dir_key[depth]); *** DEADLOCK *** 1 lock held by syz-executor.5/29615: #0: 00000000e71b375d (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x4e/0x100 fs/exec.c:1419 stack backtrace: CPU: 1 PID: 29615 Comm: syz-executor.5 Not tainted 4.19.162-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x17c/0x22a lib/dump_stack.c:118 print_circular_bug.isra.17.cold.34+0x2e3/0x41e kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1865 [inline] check_prevs_add kernel/locking/lockdep.c:1978 [inline] validate_chain kernel/locking/lockdep.c:2419 [inline] __lock_acquire+0x35bc/0x47c0 kernel/locking/lockdep.c:3415 lock_acquire+0x180/0x3a0 kernel/locking/lockdep.c:3907 down_read+0x3b/0xb0 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:758 [inline] do_last fs/namei.c:3326 [inline] path_openat+0x1215/0x2870 fs/namei.c:3537 do_filp_open+0x177/0x250 fs/namei.c:3567 do_open_execat+0xe1/0x4a0 fs/exec.c:853 __do_execve_file.isra.12+0x14a0/0x1d40 fs/exec.c:1770 do_execveat_common fs/exec.c:1879 [inline] do_execveat+0x18/0x20 fs/exec.c:1907 __do_sys_execveat fs/exec.c:1988 [inline] __se_sys_execveat fs/exec.c:1980 [inline] __x64_sys_execveat+0xe2/0x120 fs/exec.c:1980 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45de59 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f432ce53c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000142 RAX: ffffffffffffffda RBX: 0000000000002d40 RCX: 000000000045de59 RDX: 0000000000000000 RSI: 0000000020000080 RDI: ffffffffffffff9c RBP: 000000000118bf70 R08: 0000000000001000 R09: 0000000000000000 R10: 0000000020000700 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007fff19acd8af R14: 00007f432ce549c0 R15: 000000000118bf2c overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir overlayfs: filesystem on './file1' not supported as upperdir